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crypto: hisilicon/zip - optimization for performance

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1.Remove some useless steps during doing requests.
2.Adjust the possibility of branch prediction.

Signed-off-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Yang Shen 2022-08-13 17:57:52 +08:00 committed by Herbert Xu
parent 5a4c293666
commit 4f33604527
1 changed files with 13 additions and 14 deletions
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27
drivers/crypto/hisilicon/zip/zip_crypto.c
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@ -183,7 +183,7 @@ static int add_comp_head(struct scatterlist *dst, u8 req_type)
int ret;
ret = sg_copy_from_buffer(dst, sg_nents(dst), head, head_size);
if (ret != head_size) {
if (unlikely(ret != head_size)) {
pr_err("the head size of buffer is wrong (%d)!\n", ret);
return -ENOMEM;
}
@ -193,11 +193,11 @@ static int add_comp_head(struct scatterlist *dst, u8 req_type)
static int get_comp_head_size(struct acomp_req *acomp_req, u8 req_type)
{
if (!acomp_req->src || !acomp_req->slen)
if (unlikely(!acomp_req->src || !acomp_req->slen))
return -EINVAL;
if (req_type == HZIP_ALG_TYPE_GZIP &&
acomp_req->slen < GZIP_HEAD_FEXTRA_SHIFT)
if (unlikely(req_type == HZIP_ALG_TYPE_GZIP &&
acomp_req->slen < GZIP_HEAD_FEXTRA_SHIFT))
return -EINVAL;
switch (req_type) {
@ -230,6 +230,8 @@ static struct hisi_zip_req *hisi_zip_create_req(struct acomp_req *req,
}
set_bit(req_id, req_q->req_bitmap);
write_unlock(&req_q->req_lock);
req_cache = q + req_id;
req_cache->req_id = req_id;
req_cache->req = req;
@ -242,8 +244,6 @@ static struct hisi_zip_req *hisi_zip_create_req(struct acomp_req *req,
req_cache->dskip = 0;
}
write_unlock(&req_q->req_lock);
return req_cache;
}
@ -254,7 +254,6 @@ static void hisi_zip_remove_req(struct hisi_zip_qp_ctx *qp_ctx,
write_lock(&req_q->req_lock);
clear_bit(req->req_id, req_q->req_bitmap);
memset(req, 0, sizeof(struct hisi_zip_req));
write_unlock(&req_q->req_lock);
}
@ -339,7 +338,7 @@ static int hisi_zip_do_work(struct hisi_zip_req *req,
struct hisi_zip_sqe zip_sqe;
int ret;
if (!a_req->src || !a_req->slen || !a_req->dst || !a_req->dlen)
if (unlikely(!a_req->src || !a_req->slen || !a_req->dst || !a_req->dlen))
return -EINVAL;
req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->src, pool,
@ -365,7 +364,7 @@ static int hisi_zip_do_work(struct hisi_zip_req *req,
/* send command to start a task */
atomic64_inc(&dfx->send_cnt);
ret = hisi_qp_send(qp, &zip_sqe);
if (ret < 0) {
if (unlikely(ret < 0)) {
atomic64_inc(&dfx->send_busy_cnt);
ret = -EAGAIN;
dev_dbg_ratelimited(dev, "failed to send request!\n");
@ -417,7 +416,7 @@ static void hisi_zip_acomp_cb(struct hisi_qp *qp, void *data)
atomic64_inc(&dfx->recv_cnt);
status = ops->get_status(sqe);
if (status != 0 && status != HZIP_NC_ERR) {
if (unlikely(status != 0 && status != HZIP_NC_ERR)) {
dev_err(dev, "%scompress fail in qp%u: %u, output: %u\n",
(qp->alg_type == 0) ? "" : "de", qp->qp_id, status,
sqe->produced);
@ -450,7 +449,7 @@ static int hisi_zip_acompress(struct acomp_req *acomp_req)
/* let's output compression head now */
head_size = add_comp_head(acomp_req->dst, qp_ctx->qp->req_type);
if (head_size < 0) {
if (unlikely(head_size < 0)) {
dev_err_ratelimited(dev, "failed to add comp head (%d)!\n",
head_size);
return head_size;
@ -461,7 +460,7 @@ static int hisi_zip_acompress(struct acomp_req *acomp_req)
return PTR_ERR(req);
ret = hisi_zip_do_work(req, qp_ctx);
if (ret != -EINPROGRESS) {
if (unlikely(ret != -EINPROGRESS)) {
dev_info_ratelimited(dev, "failed to do compress (%d)!\n", ret);
hisi_zip_remove_req(qp_ctx, req);
}
@ -478,7 +477,7 @@ static int hisi_zip_adecompress(struct acomp_req *acomp_req)
int head_size, ret;
head_size = get_comp_head_size(acomp_req, qp_ctx->qp->req_type);
if (head_size < 0) {
if (unlikely(head_size < 0)) {
dev_err_ratelimited(dev, "failed to get comp head size (%d)!\n",
head_size);
return head_size;
@ -489,7 +488,7 @@ static int hisi_zip_adecompress(struct acomp_req *acomp_req)
return PTR_ERR(req);
ret = hisi_zip_do_work(req, qp_ctx);
if (ret != -EINPROGRESS) {
if (unlikely(ret != -EINPROGRESS)) {
dev_info_ratelimited(dev, "failed to do decompress (%d)!\n",
ret);
hisi_zip_remove_req(qp_ctx, req);